CN204745325U - Transfusion system in bone - Google Patents

Abstract

The utility model relates to a medical device, in particular to an intraosseous infusion set, which comprises a handle, a hollow needle tube and a needle core, the handle is fixed at the tail end of the needle core, the needle core is inserted into the hollow needle tube, and the intraosseous infusion set is also Including needle cap and stopper, the stopper is fixed on the needle core, so that the needle core forms two parts, the front end of the needle core and the rear end of the needle core, and the hollow needle tube is connected with the stopper; there is a through hole in the center of the needle cap, which is sleeved behind the needle core On the end; the stopper restricts the position of the needle cap, so that the needle cap moves along the needle core between the handle and the stopper. The puncture needle of the utility model adds a needle cap and a stopper on the basis of the prior art, the needle cap can adjust the vertical position between the handle and the stopper, and adds a supporting point that can be adjusted and separated from the hollow needle tube for the medical staff , Overcoming the defect of no supporting position for puncturing by hammering.

Description

intraosseous infusion set

technical field

The utility model relates to a medical device, in particular to an intraosseous infusion set.

Background technique

There are mainly three ways of fluid resuscitation or drug infusion in clinical emergency rescue, including vein, artery and intraosseous infusion. Patients with traumatic hemorrhagic shock, severe dehydration, and severe dehydration in infants and young children. Such patients cannot quickly and effectively establish vascular emergency channels due to massive blood loss and fluid loss leading to venous collapse; in addition, severe edema, severe burns, and life-threatening In difficult situations such as epileptic seizures, shaking ambulances or helicopters, and dim light, intraosseous infusion has the advantages of simple operation, rapid and effective operation, and can establish an infusion channel in time, and apply rescue drugs and even infuse plasma, concentrated blood cells, etc. , Win precious time for rescuing patients.

The common puncture means are manual rotation puncture and automatic puncture by spring or electric device. However, the manual rotation method has certain limitations for hard bone that is difficult to puncture. However, the automatic puncture device is difficult to control the force of the trigger. Due to the different bone quality of the human body, the depth range is also difficult to control. Automatic puncture will easily lead to complicated puncture, increase the difficulty of surgery, lead to the failure of the puncture needle, and even the risk of fracture and broken needle . Recently, it has been found that the method of hammering puncture has good clinical application prospects, not only applicable to various bone types, but also beneficial to medical personnel to control the puncture force.

However, there is currently no intraosseous infusion needle suitable for the hammer puncture method. The patent application number is "CN201342184Y", the application number is "200920079005.2", and the utility model named "manual intraosseous infusion needle" discloses a commonly used intraosseous infusion needle, including a manual driver and a puncture needle, and the puncture needle is a cannula The needle structure consists of two parts, the puncture needle tube and the puncture needle core. The puncture needle tube is a hollow structure, and the puncture needle core is a solid body, which is located in the cavity of the puncture needle tube. The base is tightly connected by a screw interface. When using this commonly used infusion needle to penetrate through hammering, (1), because there is no supporting point, medical personnel can generally only support the hollow needle tube. During the hammering process, the impact of the hollow needle tube will affect the medical personnel's operation; (2), the surface of the hollow needle tube is easy to slip. (3) The support position cannot be adjusted. The support point of the medical staff is usually determined according to personal habits. The support position provided by the hollow needle tube is limited and single, which affects the efficiency and success rate of puncture. In addition, puncture for hammer-style puncture is also essential to limit the entry point of the stylet. Existing puncture needles cannot meet the above requirements.

There is an urgent need for an intraosseous infusion set suitable for puncturing by hammering.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and provide an intraosseous infusion set that is beneficial to hammer puncture, so that it can have a stable and adjustable support position during hammer puncture, and the support position is not affected by hollow puncture. The effect of tube penetration, while effectively controlling the depth of the puncture needle.

In order to achieve the above purpose, the utility model provides an intraosseous infusion set, which includes a handle, a hollow needle tube and a needle core, the handle is fixed on the tail end of the needle core, the needle core is inserted into the hollow needle tube, and a needle cap and a stopper are also included. block, the stopper is fixed on the needle core, so that the needle core forms two parts, the front end of the needle core and the rear end of the needle core, and the hollow needle tube is connected to the stopper; there is a through hole in the center of the needle cap, which is sleeved on the rear end of the needle core; the stopper Limit the position of the needle cap so that the needle cap moves along the needle core at the rear end of the needle core.

The way of adjusting the position of the needle cap on the needle core is a common means in the mechanical field, including slideways, etc. Preferably, the through hole of the needle cap has an internal thread, the rear end of the needle core has an external thread, and the needle cap and the needle core are connected by threads. The needle cap adjusts the vertical position on the needle core by rotating.

The front end of the needle core is the part from the stopper to the needle tip on the pointer core, and the rear end of the needle core is the part between the stopper and the handle. The front part referred to in other parts of the text refers to the direction close to the needle point of the needle core, and the rear part refers to the direction away from the needle point.

There is a cylindrical cavity at the bottom of the needle cap, and the inner diameter of the cavity is larger than the outer diameter of the hollow needle tube. When the needle cap moves up and down, the hollow needle tube can be accommodated in the inner cavity, so that the needle cap has a longer moving range.

A limiter is arranged on the intraosseous infusion set, the limiter is conical, has a depression on the bottom surface, and is fixed on the hollow needle tube. The stopper of the intraosseous infusion set is arranged on the hollow needle tube, and after the infusion is completed, the stopper can also be used as a fixing device to facilitate medical staff to fix the hollow needle tube.

The limiter can also be fixed on the front end of the needle cap, and the limiter can also be adjusted when the needle cap is adjusted.

Preferably, the main body of the handle is pie-shaped, with rods connected to both sides. The pie shape of the handle is for tapping and the stem is for rotating the infusion set.

Preferably, the length of the rear end of the core is 15-25mm.

Preferably, the hollow needle tube has a seepage hole to prevent the front end of the needle tube from being blocked, and increase the speed of infusion, so as to achieve the purpose of rapid infusion in clinical rescue of shock patients.

Preferably, the outer surface of the needle cap has several convex ribs. Increase the friction of the needle cap, which is conducive to the stability of the support.

Preferably, the stopper is connected with the hollow needle through thread.

The puncture needle of the utility model adds a needle cap and a stopper on the basis of the prior art, the needle cap can adjust the vertical position between the handle and the stopper, and adds a supporting point that can be adjusted and separated from the hollow needle tube for the medical staff , Overcoming the disadvantage of no supporting position for puncture by hammering. The limiter can effectively control the puncture depth and prevent puncture transition.

The utility model has the beneficial effects of providing a supporting position away from the hollow needle tube, effectively adjusting the supporting position, increasing the success rate of puncture, and reducing the burden and pain of patients.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Fig. 2 is a sectional view of an embodiment of the utility model;

Fig. 3 is a sectional view of another embodiment of the present utility model;

Fig. 4 is the schematic diagram of needle core of the present utility model;

in:

1-handle 2-hollow needle tube 3-needle core

31-rear end of needle core 32-front end of needle core 4-block

5-needle cap 6-limiter 7-raised edge

8- seepage hole

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.

Example 1:

According to an intraosseous infusion set shown in FIGS. 1 , 2 and 4 , it includes a hollow needle tube 2 and a needle core 3 . The needle core 3 is a solid body with a needle point at one end, the handle 1 is fixed at the end of the needle core 3, the main body of the handle 1 is cake-shaped, and rods are connected on both sides. The rear end of the needle core 3 is fixed with a stopper 4. The stopper 4 divides the needle core 3 into two parts, the front end 32 of the needle core and the rear end 31 of the needle core. The rear end 31 of the needle core has external threads, and the stopper 4 is cylindrical. The block 4 is connected with the hollow needle tube 2 through threads. The intraosseous infusion set also includes a needle cap 5 with a through hole in the center of the needle cap 5, which is sleeved at the rear end 31 of the needle core. The diameter of the through hole is smaller than the outer diameter of the stopper 4, and the stopper 4 limits the position of the needle cap 5. There is an internal thread, and the needle cap 5 is sleeved on the needle core 3 between the handle 1 and the block 4, and the vertical distance of the needle cap 5 can be adjusted by rotating the needle cap 5. There is a cylindrical cavity inside the needle cap 5 , and the inner diameter of the cylindrical cavity is larger than the outer diameter of the hollow needle tube 2 . There is a stopper 6 on the hollow needle tube 2, and the stopper 6 is tapered and has a concave bottom surface.

Example 2:

An intraosseous infusion set as shown in FIG. 3 , the others are the same as in Embodiment 1, and the stopper 6 is fixed on the front end of the needle cap 5 . The distance between the needle core rear end 31 is 20 mm, the hollow needle tube 2 has no threads, and two seepage holes 8 are distributed. There are ribs 7 on the outer side of the needle cap 5 .

Example 3:

An intraosseous infusion set, when in use, after inserting a needle core 3 into a hollow needle tube 2, the hollow needle tube 2 is connected with a stopper 4 through threads. Rotating the needle cap 5 can adjust the needle cap 5 to move between the handle 1 and the stopper 4. Since the needle cap 5 has a cavity and can accommodate the hollow needle tube 2, it will not be restricted even if it moves to the stopper position. After adjusting the needle cap 5 to a proper vertical position, the medical staff supports the needle cap 5 with one hand and uses a hammering tool to strike the cake-shaped main body of the handle 1 with the other hand to penetrate vertically into the bone surface. The liquid device punctures the bone, and the puncture needle is adjusted by rotating the rod on the handle 1, and the resistance disappears when the bone marrow cavity is caused until the stopper 6 is buckled on the skin, and at this time, the needle-holding hand is released. Fix the puncture needle, unscrew the needle core 3, and pull out the needle core through the handle on the handle 1. Draw back the hollow needle tube 2 connected to the syringe, see that the bone marrow fluid is confirmed to be in the bone marrow cavity, and connect the exhausted blood transfusion tube for infusion.

The preferred embodiments of the utility model creation have been described in detail above, but the utility model creation is not limited to the described embodiments, and those skilled in the art can also Various equivalent modifications or replacements are made, and these equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (10)

1. an intrabone infusion device, comprise handle (1), hollow needle tubing (2) and nook closing member (3), described handle (1) is fixed on nook closing member (3) tail end, nook closing member (3) is inserted in hollow needle tubing (2), it is characterized in that: intrabone infusion device also comprises pin cap (5) and block (4), block (4) is fixed on nook closing member (3), make nook closing member (3) form nook closing member front end (32) and nook closing member rear end (31) two parts, hollow needle tubing (2) is connected with block (4); There is through hole at pin cap (5) center, is socketed on nook closing member rear end (31); Block (4) restriction pin cap (5) position, pin cap (5) is mobile in nook closing member rear end (31) along nook closing member (3).

2. intrabone infusion device according to claim 1, is characterized in that, nook closing member rear end (31) have external screw thread, and pin cap (5) and nook closing member (3) are threaded connection.

3. intrabone infusion device according to claim 1, is characterized in that, cylindrical cavity is arranged at described pin cap (5) bottom, and cavity inside diameter is greater than the external diameter of hollow needle tubing (2).

4. intrabone infusion device according to claim 3, is characterized in that, intrabone infusion device also comprises stop (6), and stop (6) is taper, and there is depression bottom surface, is fixed on hollow needle tubing (2) anterior.

5. intrabone infusion device according to claim 3, is characterized in that, intrabone infusion device also comprises stop (6), and stop (6) is taper, and there is depression bottom surface, is fixed on the leading section of pin cap (5).

6., according to the arbitrary described intrabone infusion device of claim 1-5, it is characterized in that, described handle (1) main body is cheese, and both sides are connected with bar.

7., according to the arbitrary described intrabone infusion device of claim 1-5, it is characterized in that, nook closing member rear end (31) length is 20 ± 5mm.

8., according to the arbitrary described intrabone infusion device of claim 1-5, it is characterized in that described hollow needle tubing (2) has liquid-leadage hole (8).

9., according to the arbitrary described intrabone infusion device of claim 1-5, it is characterized in that, described pin cap (5) outer surface has several fins (7).

10., according to the arbitrary described intrabone infusion device of claim 1-5, it is characterized in that, described block (4) and hollow needle tubing (2) are threaded connection.